:root {
  --bg: #0a0a0f;
  --surface: #12121a;
  --surface2: #1a1a26;
  --border: #ffffff12;
  --border2: #ffffff22;
  --text: #f0f0f8;
  --muted: #8888aa;
  --accent: #7c6af7;
  --accent2: #a594fa;
  --green: #22d3a0;
  --blue: #4facfe;
  --amber: #f5a623;
  --red: #f45b69;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(124,106,247,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,106,247,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.back-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  text-decoration: none;
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  transition: color 0.15s;
}
.back-link:hover { color: var(--accent2); }
.topbar-sep { color: var(--border2); font-size: 1.2rem; }
.topbar-title {
  font-family: 'Syne', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--border2);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}
.lang-toggle:hover { color: var(--accent2); border-color: var(--accent2); }

/* Tab navigation */
.tab-nav {
  display: flex;
  gap: 0;
  margin-left: auto;
}
.tab-btn {
  padding: 0 1.2rem;
  height: 56px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--text); border-bottom-color: var(--accent); }

.content {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
  position: relative;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-hero {
  margin-bottom: 2.5rem;
}
.panel-eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent2);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.6rem;
}
.panel-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 0.6rem;
}
.panel-desc {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 620px;
}

.section-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1rem;
  margin-top: 2.5rem;
}
.section-label:first-of-type { margin-top: 0; }

/* Requirement cards */
.req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 0.5rem;
}
.req-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.req-icon { font-size: 1.4rem; }
.req-name {
  font-family: 'Syne', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
}
.req-detail { font-size: 0.8rem; color: var(--muted); line-height: 1.5; }
.req-tag {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  margin-top: auto;
}
.tag-ok { background: rgba(34,211,160,0.1); color: var(--green); }
.tag-no { background: rgba(244,91,105,0.1); color: var(--red); }

/* Steps */
.steps { display: flex; flex-direction: column; gap: 0.75rem; }
.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.3rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.step-num {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: rgba(124,106,247,0.15);
  color: var(--accent2);
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.step-body {}
.step-title { font-size: 0.9rem; font-weight: 500; margin-bottom: 0.3rem; }
.step-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.5; }
.step-code {
  margin-top: 0.5rem;
  background: var(--surface2);
  border-radius: 6px;
  padding: 0.5rem 0.8rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.78rem;
  color: var(--blue);
}

/* FAQ */
.faq { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.faq-q {
  padding: 1.1rem 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.9rem;
  font-weight: 500;
  user-select: none;
  transition: background 0.15s;
}
.faq-q:hover { background: rgba(255,255,255,0.02); }
.faq-q-icon { color: var(--accent2); font-size: 0.85rem; font-family: 'DM Mono', monospace; flex-shrink: 0; }
.faq-toggle { margin-left: auto; color: var(--muted); font-size: 0.8rem; transition: transform 0.2s; }
.faq-item.open .faq-toggle { transform: rotate(180deg); }
.faq-a {
  display: none;
  padding: 0 1.3rem 1.1rem 3rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 0.9rem;
}
.faq-item.open .faq-a { display: block; }
.faq-a strong { color: var(--text); }

/* Warn/info box */
.warn-box {
  background: rgba(244,91,105,0.06);
  border: 1px solid rgba(244,91,105,0.2);
  border-radius: 12px;
  padding: 1rem 1.3rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
}
.warn-box .warn-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--red);
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}
.info-box {
  background: rgba(124,106,247,0.06);
  border: 1px solid rgba(124,106,247,0.2);
  border-radius: 12px;
  padding: 1rem 1.3rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
}
.info-box .info-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--accent2);
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}
.info-box strong, .warn-box strong { color: var(--text); }

/* Resource link cards */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.resource-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}
.resource-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0;
  transition: opacity 0.2s;
}
.resource-card:hover { transform: translateY(-3px); border-color: rgba(124,106,247,0.35); box-shadow: 0 8px 28px rgba(124,106,247,0.15); }
.resource-card:hover::before { opacity: 1; }
.resource-card-top { display: flex; align-items: center; gap: 0.8rem; }
.resource-card-icon {
  width: 40px; height: 40px;
  border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.resource-card-title {
  font-family: 'Syne', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  flex: 1;
}
.resource-card-ext {
  font-size: 0.7rem;
  color: var(--muted);
  flex-shrink: 0;
}
.resource-card-desc {
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.6;
}
.resource-card-tag {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border2);
  color: var(--muted);
  align-self: flex-start;
}
.resource-card-tag.tag-free { background: rgba(34,211,160,0.08); border-color: rgba(34,211,160,0.3); color: var(--green); }
.resource-card-tag.tag-official { background: rgba(124,106,247,0.08); border-color: rgba(124,106,247,0.3); color: var(--accent2); }
.resource-card-tag.tag-video { background: rgba(79,172,254,0.08); border-color: rgba(79,172,254,0.3); color: var(--blue); }

/* Capability cards (no link) */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.capability-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.capability-card-icon { font-size: 1.4rem; }
.capability-card-title { font-family: 'Syne', sans-serif; font-size: 0.9rem; font-weight: 700; }
.capability-card-desc { font-size: 0.8rem; color: var(--muted); line-height: 1.55; }
.capability-card-detail {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem;
  color: var(--accent2);
  margin-top: 0.2rem;
}

/* Tip list */
.tip-list { display: flex; flex-direction: column; gap: 0.65rem; }
.tip-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}
.tip-bullet {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem;
  color: var(--accent2);
  background: rgba(124,106,247,0.12);
  width: 24px; height: 24px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 0.05rem;
}
.tip-body { font-size: 0.84rem; color: var(--muted); line-height: 1.6; }
.tip-body strong { color: var(--text); }

/* Compte types */
.account-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
}
.account-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
}
.account-name { font-family: 'Syne', sans-serif; font-size: 0.9rem; font-weight: 700; margin-bottom: 0.3rem; }
.account-desc { font-size: 0.75rem; color: var(--muted); line-height: 1.4; }
.account-badge {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  margin-top: 0.5rem;
  background: rgba(34,211,160,0.1);
  color: var(--green);
}

/* Skills catalog */
.skill-catalog { display: flex; flex-direction: column; gap: 0.5rem; }
.skill-acc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.skill-acc-header {
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
}
.skill-acc-header:hover { background: rgba(255,255,255,0.02); }
.skill-acc-label { font-family: 'Syne', sans-serif; font-size: 0.88rem; font-weight: 700; flex: 1; }
.skill-acc-count {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: rgba(124,106,247,0.1);
  color: var(--accent2);
  border: 1px solid rgba(124,106,247,0.2);
}
.skill-acc-toggle { color: var(--muted); font-size: 0.75rem; transition: transform 0.2s; }
.skill-acc.open .skill-acc-toggle { transform: rotate(180deg); }
.skill-acc-body { display: none; border-top: 1px solid var(--border); }
.skill-acc.open .skill-acc-body { display: block; }
.skill-row {
  display: flex;
  gap: 1rem;
  padding: 0.75rem 1.2rem;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.skill-row:last-child { border-bottom: none; }
.skill-id {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  color: var(--blue);
  background: rgba(79,172,254,0.08);
  border: 1px solid rgba(79,172,254,0.15);
  padding: 0.2rem 0.55rem;
  border-radius: 5px;
  white-space: nowrap;
  flex-shrink: 0;
}
.skill-desc { font-size: 0.8rem; color: var(--muted); line-height: 1.55; padding-top: 0.12rem; }
.skill-desc-empty { font-size: 0.78rem; color: var(--muted); opacity: 0.4; font-style: italic; padding-top: 0.12rem; }